Light Needs
Mature Height
Mature Spread
Growing Zones
Buddleia Monarch® Dark Dynasty, commonly known as Monarch® Dark Dynasty Butterfly Bush, is a small, compact shrub that is a magnet for pollinators. It features long panicles of vivid purple flowers starting in late summer and continuing until first frost. The flowers are honey scented and attract migrating monarchs, along with other pollinators. The soft gray-green leaves are also attractive and stay evergreen in warmer climates.
Monarch® Dark Dynasty Butterfly is an upright, densely branched shrub that reaches 2 – 3 feet tall and only 3 – 4 feet wide. It will stay compact and is an excellent choice for small landscapes. It is drought tolerant, heat tolerant, cold hardy to zone 5, and deer/rabbit resistant. Plant several of these shrubs to create an outstanding flowering hedge, add them to a pollinator garden, or use them in a foundation planting to upgrade your curb appeal.
Monarch® Dark Dynasty Butterfly Bush Care
This shrub thrives in full sun, with at least 8 hours of sun a day. It adapts to many different soil types, although it prefers fertile, slightly alkaline soil. The soil must drain freely, as water-logged soil is the most common cause of death in this shrub. Water Monarch Dark Dynasty weekly to establish its roots over the first growing season, and then reduce supplemental water the following years. Fertilize in the spring with an organic, all-purpose formula.
Butterfly bushes are slow to wake up in the spring. It blooms on new wood, so prune freely in early spring once new growth starts. Deadhead to encourage rebloom.
Monarch® Dark Dynasty Butterfly Bush Spacing
For planting a tight hedge, space these shrubs approximately 3 feet apart, center on center. Increase the spacing to 5 feet apart if a gap between bushes is desired.
Compare Monarch® Butterfly Bushes
Compare flower color, foliage, mature size, and the features that set each Monarch® Butterfly Bush apart.
| Variety | Flowers | Foliage | Mature Size | Why Choose It |
|---|---|---|---|---|
| Royal purple | Gray-green | 3' H × 3.5' W | Compact, rounded form for smaller sunny spaces | |
| Pale periwinkle blue | Silvery green | 3' H × 5.5' W | Low, broad habit with cool-toned foliage and blooms | |
| Cerise to raspberry pink | Green | 3.5–4' H × 3.5–4' W | Intense pink 10-inch flower spikes on a rounded plant | |
| Lavender to blue-purple | Mint green | 3.5–4' H × 6–6.5' W | Extra-long two-tone flowers on a broad-spreading plant | |
| Magenta-purple | Golden yellow | 3.5–4' H × 4–5' W | Golden foliage adds color before flowering begins | |
| Light appleblossom pink | Dark green | 5' H × 6–6.5' W | Large, floriferous plant with soft pink flower spikes | |
| Magenta-red | Green | 2.5–3' H × 3.5–4' W | Compact form with richly colored flower panicles |
Monarch® Dark Dynasty Butterfly Bush Plant Facts
Growing Conditions
- Hardiness ZonesGrowing Zones
- USDA Zones 5 to 8 (perennial); grown as an annual elsewhere (outdoors year-round); grown indoors elsewhere (outdoors year-round); grown in containers elsewhere (grown as a seasonal crop)
- Sun Exposure
- Part Sun to Full Sun (5+ Hours Direct Sun)
- Mature Height
- 2-3 Feet
- Mature Spread
- 3-4 Feet
- Growth Habit
- , Mounded
- Water Needs
- Average
Flowers & Foliage
- Flower Colors
- , Purple
- Flower Description
- Purple
- Bloom Time
- Summer to Fall
- Blooms On
-
New Wood
?
"Blooms on" tells you which stems produce flowers, which decides when it's safe to prune.
- New Wood: Flowers form on stems that grow this season. Prune in late winter or early spring without losing blooms.
- Old Wood: Flower buds form on last year's stems. Prune right after flowering. Pruning in fall or early spring removes next year's blooms.
- Both New and Old Wood: Blooms on last year's stems and again on new growth, so it flowers even after a hard winter or a mistimed pruning. Prune lightly after the first flush of blooms.
- When to Prune
- Late winter to early spring, before new growth starts
- Foliage Color
- , Green
- Foliage Description
- Green
- Foliage Type
- , Deciduous
- Seasonal Interest
- , Summer Flowering
Garden Benefits
Plant Overview
- Common Name
- Monarch® Dark Dynasty Butterfly Bush
- Botanical Name
- BUDDLEIA MONARCH 'DARK DYNASTY'
- Brand
- Plants That Work
- Plant Type
- Shrub
Simple Plant Spacing Calculator
Please Note: The pictures below are to give a general representation of the different container sizes. The actual size/ages of plants are estimates and will vary based on type of plant, time of year, last pruning & many other factors.
Also Known As:
Quart
Plant Age:
~ 6 months - 1 year
Plant Size:
~ 4"-8"
Pot Size:
~ 4.75"H x 4.5"W
Volume:
1.50 quarts
Also Known As:
2.5 Quart Pot
Plant Age:
~ 1 - 2 years old
Plant Size:
~ 8"-12"
Pot Size:
~ 6.5"H x 6.5"W
Volume:
2.20-2.30 quarts
Also Known As:
#1 Container
1 Gallon
Plant Age:
~ 1 - 2 years old
Plant Size:
~ 10"-14"
Pot Size:
~ 7"H x 7.75"W
Volume:
2.26-3.73 quarts
Also Known As:
#2 Container
2 Gallon
Plant Age:
~ 1.5 - 3 years old
Plant Size:
~ 12"-18"
Pot Size:
~ 9.5"H x 9.5"W
Volume:
1.19-1.76 gallons
Also Known As:
#3 Container
3 Gallon
Plant Age:
~ 2 - 4 years old
Plant Size:
~ 12"-30"
Pot Size:
~9.5"H x 11"W
Volume:
2.32-2.76 gallons
Also Known As:
#5 Container
5 Gallon
Plant Age:
~3-4 years old
Plant Size:
~ 20" - 60"
Pot Size:
~11" H x 10 1/2” W
Volume:
3.5 - 4 gallons
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We want your plants to arrive in great condition! If you notice any issues upon delivery, contact us within 3 days.
Starting January 1, 2026 all bushes, perennials & trees purchased come with an extended 1-year warranty for added confidence. If your plant dies due to a health issue within a year, we’ll make it right.
Plants that are currently in stock typically ship within 2-7 business days after your order is placed.
Plant Addicts ships to the lower 48 states within the U.S. Unfortunately, we do not currently ship to Alaska, Hawaii, or internationally.
This plant cannot be shipped to the following states: ID, OR, WA, AK, HI. These restrictions apply only to this specific plant due to agricultural regulations or other limitations. Other plants may still be available for shipping to these states.
If you have any questions about shipping restrictions, feel free to reach out to our team!